Abstract
In this research paper a comparative study has been carried out for the removal of methyl violet dye using unfunctionalized and functionalized cellulose. The functionalization was achieved through esterification of cellulose with furan-2,5-dione. The functionalization of the cellulose was evidenced using BET, FT-IR, SEM and TGA. The adsorption isotherm data was fitted using different isotherm models like Langmuir, Freundlich, Temkin, Flory-Huggins and Dubinin-Kaganer-Radushkevich models and found to follow Langmuir and Temkin isotherm models with high value of correlation coefficients. Functionalized cellulose (106.38mgg-1) showed higher dye removal capability than unfunctionalized cellulose (43.668mgg-1). The kinetics of adsorption was investigated using pseudo first order, second order, Elovich, liquid film diffusion and intra-particle diffusion models. The mechanism of adsorption was found to follow pseudo second order rate equation. Thermodynamic studies showed that the adsorption process was endothermic and spontaneous.
| Original language | English |
|---|---|
| Pages (from-to) | 389-397 |
| Number of pages | 9 |
| Journal | International Journal of Biological Macromolecules |
| Volume | 65 |
| DOIs | |
| Publication status | Published - Apr 2014 |
Keywords
- Adsorption
- Cellulose
- Esterification
- Functionalization
- Methyl violet
ASJC Scopus subject areas
- Structural Biology
- Biochemistry
- Molecular Biology
- Economics and Econometrics
- General Energy